leads to lesson three -- appearances count, above all. jfk. nixon, just out of the hospital, pale and refusing professional makeup. lighting counts, too. in 1984, reagan's people fussed more over his man mondale did over his and reagan always had a glass of wine just before going on to get the rosy cheeks. lesson four. real debating? so far, after 52 years, not actually required here, so, relax. learn your lines and don't speak in a look at your wristwatch because that will definitely hurt you. besides, 90 minutes and you're done. possibly for good. john donvan, abc news, washington. >> we're so glad you were watching. you may have noticed some differences here in our studio. let us hear from you at abcnews.com. and, of course, "nightline" will be along later. as we leave you tonight, with a look at the white house, aglow in pink in honor of breast cancer awareness month. we'll see you again tomorrow. until then, good night.